Home / 5,140.98-7,715.43-2,220.30

Finding the Fourth Proportional to 5,140.98, 7,715.43 and 2,220.30

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Solution

The fourth proportional to 5,140.98, 7,715.43 and 2,220.30 is: 3,332.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,140.98 : 7,715.43 = 2,220.30 : x
  2. Step 2: Convert to fraction form
    5,140.98/7,715.43 = 2,220.30/x
  3. Step 3: Cross multiply
    5,140.98x = 7,715.43 × 2,220.30
  4. Step 4: Simplify right side
    5,140.98x = 17,130,569.23
  5. Step 5: Solve for x
    x = 17,130,569.23/5,140.98
  6. Step 6: Final answer
    x = 3,332.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.